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Physics Test - 1

Que.1

Consider the following statements with respect to Prototype Fast Breeder Reactor (PFBR):
1. PFBR is a reactor, which produce more fuel than it consumes.
2. PFBR is using thorium to breed new fissile material.
3. The tariff of electricity produced from PFBR is comparable with that of coal based thermal power stations.
Which of the above statements are correct:

A.

1 and 2

B.

2 and 3

C.

1 and 3

D.

All

Que.2

Usually the fighter planes are made up of flat surfaces and very sharp edges. Why?

A.

It provides better thrust.

B.

It provides air pressure balance.

C.

It makes airplane invisible to radar.

D.

It improves the altitude controlling system.

Que.3

Consider the following statements related to the fuel cell technology:
1. It produces electricity by combining hydrogen and oxygen in an electrochemical reaction.
2. It converts the chemical energy of a fuel directly into electricity (DC) and heat.
3. Direct emissions from a fuel cell vehicle are water and a little heat thus reduces Green House gases.
Select the correct answer from below given codes:

A.

1 and 2

B.

2 and 3

C.

1 and 3

D.

All

Que.4

Coating of which of the following material is required in plasma HDTV to create the image?

A.

Phosphor

B.

Sodium

C.

Xenon

D.

Neon

Que.5

Why Airplanes' wings are curved on top and flatter on the bottom?

A.

Shape makes air flow over the top faster than under the bottom hence less air pressure is on top of the wing.

B.

Shape makes air flow over the bottom faster than the top hence less air pressure is on top of the wing.

C.

Shape makes air flow over the top faster and provides thrust to the propulsion system.

D.

Shape makes air flow over the bottom faster than the top and provides thrust to the propulsion system.

Que.6

Which of the following statements is/are true about Black Hole?
1. Black holes are generally made when the center of a very big star falls in upon itself or collapses. 
2. The massive gravitational influence of a black hole distorts space and time in the near neighbourhood. 
3. Black holes do not emit radiation on their own.
Codes:

A.

1 and 2

B.

Only 2

C.

Only 3

D.

All

Que.7

Recently government is emphasizing a lot over the expansion of LED bulbs. Which of the following statements is/are true regarding this?
1. LED lamps have high electrical efficiency than fluorescent lamps, but it suffers through the problem of short life span.
2. LED lamps reduce cooling loads since light projected from LEDs produce no heat.
3. LED lamps are highly resistant to shock and vibration.
Codes:

A.

Only 1

B.

Only 2

C.

2 and 3

D.

All

Que.8

Which of the following pairs are correctly matched?
1. International Space Station is present in Low Earth Orbit.
2. Earth Mapping and Observation satellites uses Polar Orbit.
3. Galileo and GLONASS are present in Medium Earth Orbit.
Codes:

A.

1 and 2

B.

2 and 3

C.

1 and 3

D.

All

Que.9

Thumba is a place located in Kerala state of India. It has Thumba Equatorial Rocket Launching System. Why Thumba has been selected for this?
1. Thumba lies on the line of the geomagnetic equator of Earth.
2. Kerala government provides subsidised land and resources for space research.
3. Pollution level is low and upper air circulation is missing.
Codes:

A.

Only 1

B.

2 and 3

C.

Only 3

D.

All

Que.10

The Chandrasekhar limit is the limit of the maximum mass of a stable white dwarf star. Which of the following statement defines the term white dwarf star?

A.

Its mass and volume is comparable to that of the Earth.

B.

It is a cloud of gas and dust in outer space.

C.

It is a hypothetical star that is created from a red dwarf star that has exhausted most of its hydrogen fuel supply.

D.

It is formed when a low-mass star has exhausted all its central nuclear fuel and lost its outer layers as a planetary nebula.

Que.11

The satellite orbit due to balance of which of the following factors?
1. Satellite's velocity with which  it is travelling in a straight line.
2. Force of the Earth's gravitational pull on the satellite.
3. Mass and size of the satellite.
Select the correct answer using below given options:

A.

Only 1

B.

Only 3

C.

1 and 2

D.

All

Que.12

Consider the following statements regarding Magnetic Resonance Imaging (MRI):
1. MRI scanning uses X rays in magnetic field to produce images of body parts.
2. MRI scanning cannot produce the pictures of bone, Computerized Tomography (CT scan) can produce the pictures of bone.
3. Jewellery and other wearable metallic accessories are not allowed during MRI since it will interfere with the magnetic field.
Which of the statement given below is/are correct?

A.

Only 3

B.

1 and 2

C.

2 and 3

D.

1 and 3

Que.13

The place from which a satellite is launched is important in determining its orbit. Referring that which of the following statements is/are correct?
1. For geostationary orbit a satellite is launched from a place with higher latitude.
2. For polar orbit a satellite is launched from somewhere close to the equator.
Select the correct answer using below given options:

A.

Only 1

B.

Only 2

C.

Both 

D.

None

Que.14

IMAX (Image Maximum) term is related to which of the following?

A.

Motion picture film format

B.

Sound system in 3D format

C.

Robotics

D.

Television technology

Que.15

Which of the following is/are the applications of sound waves?
1. Pre-natal scanning
2. Detecting flaws and cracks in metal.
3. Measure the temperature in a nuclear reactor.
Codes:

A.

Only 1

B.

2 and 3

C.

1 and 3

D.

All

Que.16

Consider the following statements related to Uranium:
1. Uranium-235 and U-238 are chemically identical, but differ in their physical properties.
2. Uranium enrichment is the process of increasing the ratio of U-235 to U-238. 
3. Enrichment of Uranium is done by the centripetal process.
Which of the statements given above is/are correct?

A.

Only 1

B.

1 and 2

C.

2 and 3

D.

1, 2 and 3

Que.17

Which of the following statements is/are true about Geosynchronous satellite?
1. Unlike geostationary satellite its orbital period is not same as Earth's rotational time period.
2. Though all geosynchronous satellites are geostationary satellites but the converse is not true.
Codes:

A.

Only 1

B.

Only 2

C.

Both 

D.

None

Que.18

With respect to electromagnetic waves consider the following statements:
1. Electromagnetic waves are described by their wavelength only.
2. Electromagnetic waves need no medium of propagation. 
3. Electromagnetic waves are not deflected by external field.
Which of the above statements is/are correct?

A.

Only 1

B.

2 and 3

C.

1 and 2

D.

All

Que.19

Consider the following statements regarding Remote Sensing Satellites:
1. It is always placed in Low Earth Orbits.
2. It can be used for climate monitoring and Climate research purposes.
3. It can give regular micro and macro information on land and water bodies.
Which of the statements given above is/are correct?

A.

Only 1

B.

2 and 3

C.

1 and 3

D.

All

Que.20

Consider the following statements related to the different components of nuclear power plant:
1. Reflector: it is placed around the core to reflect back the neutrons that leak out from the core surface.
2. Control rods: it shut down the reactor in case of emergency and is made up of cadmium or lead.
3. Coolant: it is a fluid circulating through the core so as to transfer the heat from it.
Which of the above statements is/are correct?

A.

1 and 3

B.

2 and 3 

C.

Only 3

D.

All

Que.21

Which of the following is/are the industrial applications of the radioisotopes?
1. Automobile industry uses it to test steel quality in the manufacture of cars.
2. Construction industry uses it to gauge the density of road surfaces and sub-surfaces.
3. Oil, gas, and mining, companies use it to map the contours of test wells and mine bores.
Codes:

A.

Only 1

B.

2 and 3

C.

1 and 3

D.

All

Que.22

Which of the following statement defines the term "depleted Uranium"?

A.

Depleted uranium is a by-product from enriching thorium to use in second statge nuclear power reactors only

B.

Depleted uranium is an enriched form of natural uranium which can be used in fast breeder nuclear power reactors only.

C.

Depleted Uranium is uranium with a lower content of the fissile isotope U-238 than natural uranium.

D.

Depleted uranium is a by-product from enriching natural uranium to use in nuclear power reactors.

Que.23

Which of the following statement related to the ionizing radiations is incorrect?

A.

These are the electromagnetic waves of longer wavelength from near ultraviolet rays to radiowaves.

B.

These electromagnetic radiations have high energy.

C.

They can cause ionization of atoms and molecules of the medium through which they pass and convert them into charged ions.

D.

It can break bonds in proteins, DNA and or other importants molecules.

Que.24

Which of the following is/are the effects of pressure on the State of Matter?
1. Pressure raises the temperature at which a given type of matter changes states.
2. Due to high pressure gas condenses to the liquid state.
Select the correct answer using the codes give below:

A.

Only 1

B.

Only 2

C.

Both 

D.

None

Que.25

Fertile material although not itself fissionable but can be converted into a fissile material by neutron absorption and subsequent nuclei conversions. Which of the following are the natural occurring fertile materials?
1. Thorium - 232
2. Uranium - 234
3. Uranium - 238
4. Plutonium - 238
Codes:

A.

1, 2 and 3

B.

2, 3 and 4

 

C.

2 and 4

D.

All

Rank List

 
Rank
Name
Marks Obtained
roopkishor verma
1
roopkishor verma
15.42
sai swaroop
2
sai swaroop
0.00
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